Nation Ford Chemical’s South Carolina plant is the western world’s largest producer of Sulfanilic Acid (4-Aminobenzenesulfonic acid) and the only company that offers all four grades. We have forged a strong partnership with China’s most efficient, highest quality producer of Asian-sourced Sulfanilic Acid. This arrangement, together with our efficient global distribution and high-volume production, ensures that we can provide a reliable supply of low-cost products to customers worldwide.